I have stared backing up my DVD's I have done 7 so far. Two of them have give me this error code when I have tried to play them. I tried the backup more then once using many utiltiies Error Code 89030000 Unknown File Format I have tried playing these with Powerdvd. When I put the discs in my PS/2 it says it is unable to read the disc. The other backups work fine. I usually use. Dvd Deycrypter to backup the files. DvdFab to seperate the layers ImgTools to create the image Dnd Deycryter to burn the DVD I am new at this so any help would ber great.. Thanks